import com.imsl.chart.*;
import java.awt.Color;

public class SampleBackgroundGradient extends JFrameChart {
    
    public SampleBackgroundGradient() {
        Chart chart = getChart();
        chart.getBackground().setFillType(ChartNode.FILL_TYPE_GRADIENT);
        chart.getBackground().setGradient(Color.yellow, Color.yellow, Color.red, Color.red);
        AxisXY axis = new AxisXY(chart);
        double y[] = {4, 2, 3, 9};
        new Data(axis, y);
    }
    
    public static void main(String argv[]) {
        new SampleBackgroundGradient().setVisible(true);
    }
}